Oven door



G. D. WILKINSON ET AL OVEN DOOR Filed April '7, 1924 2 Sheets-Sheet l -t'al-EORGIE 1).,.WILKINSON AND AUGUSTUS .E` HARTER, 0F OAK PARK, ILLINOIS, .AS- SIGNORS TO CIB'IBlBEN & SEXTON COMPANY, 0F CHICAGO, ILLINOIS, A CORPORA- l'rrcnv or' rLLrnors.

oven noon.

Application led April 7, 1924. Serial No. 704,672.

To all 'whom t may conce/m.'

Be it known that we, GEORGE D. WIL- vrimsorr and AUGUSTUS' F. Haaren, citizens of the United States, residing at Oak Fark, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Oven Doors, of which the following is a specification.

rlhis invention relates particularly to oven doors; and the primary object is to provide an improved construction involving the use of an outer sheet metal panel constituting the mai-n body of the door, an inner sheet metal lining, and a pair of trunnions having reenforcing Shanks housed between the mainA panel and the lining. Such a construction provides for the supporting of the door and any load which may be imposed upon it when the door is in open condition by the trunnions and the shankextension thereof, which suitably may be made of castA iron and of suliicient lstrength to readily su port the door'and any superimposedweig t which may be imposed upon it in use.

The present application constitutes a continuation in part of our pending application No. 675,113, tiled November 16, 1923.

The invention is illustrated in its preterred embodiment in the accompanying drawings, in which- Fig. l represents a broken elevational view of a gas range equipped with the improved door; Fi 2, a horizontal sectional view taken as in icated at line 2 or' Fig. l,

but showing the door in open position and a portion of the lining of the door broken sheet metal member,

away; Fig. 3, a broken vertical section taken as indicated at line 3 of Fig. 2; Fig. 4, a broken perspective view, partly in .section, illustrating the manner in which the door is hinged; Fig. 5, a broken vertical sectional viewtaken as indicated at line 5 ci Fig. 4; Fig. 6, a broken perspective view ot the inner plate, or liningof the door; Fig. 7, a broken perspective view of an outer` l or mainpanel, of the door; and Fig. 6, a broken sectional view taken as indicated at line 8 of Fig. 4, this view bein on an enlarged scale, however.

lin the ustration given, A represents a 'trame ot a range which is provided with ovens equipped with .doors A and A2. A

description of the door A and the manner of mounting it will suffice for an understanding of the invention.

rllhe door opening 1 is bounded by a peripheral frame-member 2 whose side members are of angular cross-section, as shown in Fig. 2. These angles` have their flanges which extend parallel with the front of the oven provided at their lower portions with slots 3 which are adapted to accommodate the concealed hinges.

The door A comprises a main cuter sheet metal panel 4 which is bowed outwardly and is provided at its periphery with a top flange 4, a'bottom flange 4b, and endlanges 4c; an inner sheet metal panel, or lining 5 which Ais provided at its margins with a top flange 5, a bottom flange 5", and endv lian es 5c; curved or arcuate hinge-members 6 a apted to extend through the slots 3, said members 6 having their outer ends equipped with laterally extending Shanks 6? which are housed between and serve to support the panels of the door, the junction portions of the member 6 and shank 6a, in each case, being equipped with a plate 6b which is adapted to cover the slot 3 and conceal the hinge when the door is closed; and a handle 7 secured to the upper portion of the door. p rl[`he door is adapted to be engaged, when in the closed position, by a latch 8 carried by the frame A. and disposed above the door.

This latch may be of any suitable construc-l tion,'and it is not shown in detail.

The flanges of the main panel 4are notched at the lower corners of the door, as indicated at 9, to accommodate the Shanks of the -trunnions or hinge-members 6. Also, the flanges of the lining panel 5 are notched at the lower corners of the door, as indicated at 10. The flanges of, the outer and inner anels of the door have a telescopic relation, that is, the flanges of the lining member fit inside lthe anges of the main panel. The notches, therefore, are complemental and afford assa for the Shanks of the trunnions. he s 'ank 6 of each trunnion preferabl comprises a base pertion 6c which extends t'rough. the notches at the corner of the door, and an arm 6c1 risin from thea portion 6 and extending oblique y and terminating at the upper portion of the door.

i which the lining bears, are provided with' i 3o with each other.

upper ones of which It will be noted that the main panel 4 of the door is so pressed as to provide a peripheral marginal shelf, or bearing, 11 adjacent the flanges of the member, the intermediate or main portion of the body of the sheet being pressed or dished outwardly so as to lie in b a different plane. The portions 6 ofthe shanks of the trunnions bear upon the shell portion 11 at the lower portion of the door.

he portions or arms 6d of the Shanks are offset inwardly or toward the lining, as will be clearly understood from lFigs. 4 and 8, and thus afford reenforcements or supports for the lining. At the upper ends of the arms 6d are small extensions 6e which bear upon the marginal bearing 11'. The arms 6d are also equipped at 'their upper ends with grooves or feet-6t which bear upon the depressed portion of the panel 4 at the points where the handle 7 is connected, the metal at these points Ibeing struck inwardly slightly, however, as indicated at 12. The shank-portions 6c and 6t are secured to the outer panel by means of stove bolts'lB, the serve to secure the handle 7 to the door.

The offset arm-s 6d of the Shanks, against tapped perforations 14fwhich receives screws 15 that serve to secure the lining in sition, so that the housing of the Shanks of' t e trunnions is thus completed.

As will be understood from Figs-4 and 8, the arcuate member 6, the shank 6, and the concealing plate 6b are formed integrally The whole member may suitably comprise a casting. lThe plate ortions 6 preferably are provided with s allow rabbets 16 against which bear the edges 17 of the outer panel, which edges are formed b cutting away the Hangs 4 in the manner s own in Fi 7. Thus, practically a flush joint is ovi ed.

As appears rom Fig. 5, each hinge-member 6 is of suitable form to co-perate with the slot 3 .to obtain a suitable hinge action.

Preferably, the inner end of each member 6 has connected therewith a counterbalancing device. In the illustration given, each member 6 has connected with its inner end, a link 18 which extends upwardly and has attached to its upper end a coil-spring 19, whose lower end is secured to a stove bolt 20 carried by the frame A. In this manner, the door is counterbalanced.

When the door vis in the open position, be

shown in Fig. 3, the trunnions will support it in that position, the member 21 serving as a stop to limit the downward swing of the door.

As appears from Fig. 2 fthe base portions of the Shanks 6a flange 4b enable it to move into Thus, when the lining is applied, the flanges of the lining are accommodated by these spaces.

From Vthe description given, it will be understood that the door is carried wholly y the trunnions and their Shanks, and that the Shanks of the trunnions afford a very substantial reenforcement for the door. Moreover, the Shanks of the trunnions are mainly housed in the space between the outer and inner panels of the door. Thus it is possible to give to the door adequate strength and stanchness, while still employing comparatively light gauge metal for forming the panels. This is accomplished without marring the appearancey of the door, since the strong castings which are employed are well housed Within the door. The outer panel of the door may thus be made an integral member, ,and may be suitably enameled, and .its appearance will not be marred in any way. The lonly exposed screws are the screws 13, lwhich may have nickel plated heads. The construction is strong, sanitary, and thoroughly adapted to its purpose.

By reference to Fig. 3, it will be seen that the body of the inner panel 5 of the door lies inv-a plane substantially flush with the upper edge of the lower member 2n of the oven door frame, so that baking pans, or the like,may be drawn out of the oven and rest upon the up r surface of the door, and then shoved again into the oven if desired, with great facility. The hinge-members 6, it will be noted, permit a certain drop of the door in the action of opening the door. This is compensated for by striking the body of the panel 5 u wardly (assuming the door to be o en). he raised bod -portion of the pane 5 is of small enoug dimensions to lthe door-opening when the door isclosed.

The foregoing detailed description has been given for clearness of understandin only, and no unnecessary limitations should be understood therefrom.

What we regard as new, and desire to secure by Letters Patent, is:

1. The combination with an oven door frame-provided near the lower corners with slots., of a door comprising a sheet metal panel having an inturned marginal fiange which is notched at its lower corners, and a pair of hinge-members, said hinge-memrs having curved portions workin through the corresponding slots in sai frame and havinglaterall extending shankportions extending` throu said notches and secured to said panel. i

2. The combination with an oven door frame provided near the lower corners with slots, of a .door comprising 4a. sheet metal panel having an inturned marginal flange which is notched at its lower corners, and

IIB

a pair of hinge-membeis havin curved portions extending through said s ots and having Shanks provided with laterally projecting portions extending through said notches, means Securing Said Shanks to said panel, and plates ,at the junctions between4 the Shanks and curved hinge-portions which are adapted to conceal the hinge when the door is closed.

3. The combination with -a-n oven door fra-ine'provided near the lower corners with slots, of a-door comprising a sheet metal panel having an inturned marginal flange which is notched at its lower corners, a pair of hinge-members by which said panel is carried, each' hinge-member comprising, in integral formation, an arcuate portion ex tending through the corresponding Slot in said frame, a laterally projecting shank-portion extending thro-ugh the corresponding notch of the door lia-nge, a hinge-concealing plate at the junction of said portions, an arm extending from the laterally projecting por tion of the shank to near the lupper edge of the door, means `securing said Shanks to said panel, and a lining panel covering said Shanks.

4. The combination with an oven door frame provided near the lower corners with slots, of a door comprising an outer main panel and a lining panel, Said panels having telescopically related flanges with notches at the lower corners of the door, and hinge-members carrying said door, each hinge-member having a curved portion extending through the corresponding slot in said frame and having a laterally olfsetv frame provided near the lower corners with.

slots, of a door comp-rising an outer main panel which has its body-portion dishcd outwardly and an inner lining panel which has its body-portion dished inwardly, said panelsy having telescop-ically related ianges with notches at the lower corners of the door, and hinge-memberssupporting said door, each hinge-mernber comprising a curved portion extending through a corresponding slot in said frame and a sha-nkportion extending through a notch of the door and housed between said panels, each hinge-member having also a slo-t-coverinv plate, and means securing said panels to said Shanks.

GEORGE D. WiLKINsoN. AUGUSTUS F. Murrieta.A 

